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EMANON PART NO.
MS51971-7
MS51971-7 is a nut in steel comp 303 or steel comp 304 or steel comp 305, passivate finish and 0.625 INCHES diameter.
Nut
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.625 in
WIDTH ACROSS FLATS0.9220–0.9375 in
THREAD
THREAD0.625 inches
MATERIAL & FINISH
MATERIALSteel comp 303 or steel comp 304 or steel comp 305
MATERIAL SPECFED 66 — FED STD
FINISHPassivate
FINISH SPECQQ-P-35
MECHANICAL
HARDNESSNot rated
STANDARDS & TRACEABILITY
NSN5310-00-764-6609
GOVERNING STANDARDMS51971-7
FLIS · NSN 5310-00-764-6609 · retrieved 2026-08-08
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
thread: 5/8-11, Height: 1/2", Head Width: 7/8, MS51971 series nut
Emanon is a stocking distributor — quality-system certifications are held by the certified manufacturers we source from, not by Emanon. Every shipment carries manufacturer certifications and full lot traceability.